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Meaning of Lunar Orbiter

Lu'nar Or'biter

Pronunciation: [key]
— U.S. Aerospace. U.S. Aerospace.
  1. one of a series of space probes that orbited and photographed the moon in 1966 and 1967.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.